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The number of protons in an atom of an element is called |
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Definition
atomic number of that element |
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The sum of the protons and neutrons in an atom is the |
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atomic mass of the element |
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The number of _________ in an atom of an element is called atomic number of that element |
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The transfer of an ______ from one atom to another so that both achieve a full outer electron shell is called ionic bonding. |
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The transfer of an electron from one atom to another so that both achieve a full outer electron shell is called ___________. |
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___________ involves the sharing of one or more pairs of electrons. |
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Covalent bonding involves the sharing of one or more pairs of __________. |
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Term
A solution with pH of 3 is _______ times more acidic than one with pH of 6. |
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Possession of a functional groups such as phosphate or aldehyde makes a molecule more hydrophilic and therefore more readily _______ in water. |
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______ are joined together by glycosidic linkages. |
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Sugars are joined together by _______ linkages. |
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No matter how long a _______ grows, it always has an amino group at one end and a carboxyl group on the other. |
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Definition
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No matter how long a peptide chain grows, it always has an ______ group at one end and a ______ group on the other. |
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Definition
amino group & carboxyl group |
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Term
An example of a negatively charged amino acid is _______) or _________. |
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Definition
aspartate (aspartic acid) or glutamate (glutamic acid) |
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Term
An example of a _______ charged amino acid is aspartate (aspartic acid) or glutamate (glutamic acid). |
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Term
_________ bonds are formed between residues of the amino acid cysteine. |
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Definition
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Term
Disulfide bonds are formed between residues of the amino acid _______. |
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Definition
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Term
Secondary protein structure is brought about by the formation of ______ bonds between amide groups and carboxyl groups. |
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Definition
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Term
Secondary protein structure is brought about by the formation of hydrogen bonds between ______ groups and _______ groups. |
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Term
Amino acids in naturally occurring proteins are all _ (one letter) -isomer. This results in an alpha helix of protein taking on a spiral or right-handed configuration for maximum stability. (*) |
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Heating or treatment with certain chemicals cause proteins to lose their three dimensional structure and become _______. |
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A short stretch of double stranded DNA has ____# adenine residues and _____# guanine residues.
There are therefore 61 cytosine residues and a total of 287 = (61*3)+(52*2) hydrogen bonds joining two strands. |
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Definition
52 adenine residues and 61 guanine residues |
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Term
The arrangement of _________________ is described as anti-parallel. |
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Definition
two strands of a DNA molecule |
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The nucleotides of ___ contain uracil instead of thymine. |
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The nucleotides of RNA contain uracil instead of thymine. |
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19. Phospholipids are described as amphipathic because their molecules have both _______ and ______ regions |
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In fats, fatty acids are joined to ______ via ester linkages. |
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20. In fats, fatty acids are joined to glycerol via ester linkages. |
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